Fly-wheel



- (No Model.) 2 SheetsSheet 1.

L. D. COPELAND.

FLY WHEEL.

No. 393,059 Patented Nov. 20, 1888.

2 Sheets-Sheet 2..

(No Model.)

L. D. COPELAND.

FLY WHEEL.

No. 393,059. Patented Nov. 20, 1888.

lwitmeawo NrrEn STATES PATENT Fries.

FLY-WHEEL.

SPECIFICATION forming part of Letters Patent No. 393,059, dated November20, 1888.

Application filed November 19, 1887. Serial No. 255.632.

To all whom it may concern.- Be itknown that I, LUoIUs D. COPELAND, acitizen of the United States, residing at Gamden, in the county ofCamden and Stateof New Jersey, have invented certain new and usefulImprovements in Fly-l/Vheels for Steam-Englues; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, reference being had to the accompanying drawings, which formpart of this specification.

This invention has relation to fly-wheels or main pulleys for steamengines and other motors, and particularly to that class of wheels orpulleys in which a ratchetwheel and pawl or dog are employed to allowthe wheel to turn in one direction independently of the shaft upon whichit is mounted.

My invention consists in the combination, with the engine or motor shafthaving aconical head or spindle and carrying a ratchetwheel,of theflywheel or pulley havingaconieallyrecessed hub and carrying a pawlwhich engages with said ratchet, with devices for holding the wheel uponthe shaft and preventing binding of the same.

In the accompanying drawings, Figure 1 is side view of a'ily-wheel orpulley upon the main shaft of an engine provided with my improvedappliance; Fig, 2, a transverse sectional view on line or .r of Fig. 1,and Fig. 3 a section of a detail. Fig. 4 is a central sectional viewshowing the conical hub and the wheel mounted thereon.

A designates the main shaft of an engine or motor, and B the flywheel ormain pulley.

Instead of keying or otherwise rigidly securing the fly-whcel to themain shaft, I fit the former loosely upon the shaft, and in order togive it ample bearing-surface and prevent bending I provide the shaftwith a tapering or conical head, a, and correspondingly taper the hub ofthe wheel. Upon the outer face of the hub I place a disk or washer, b,and secure the same in place by meansof a screw or bolt, (1, and aspiral spring, (1, the latter being (No model.)

situated between the head of the bolt and the face of the washer. Whenfreely rotating,the tendency of the wheel will be to move toward the endof the shaft and become loose upon its bearings. This is an advantage,and lcmploy the spring so that it may yield sufficiently under thepressure of the wheel to free thelatter from close or binding contactwith the conical. bearing.

Upon the main shaft adjacent to the inner face of the wheel is fixedrigidly a ratchetwheel, D, while pivoted to one of the spokes of thewheel is a pawl, d engaging with the teeth of the ratchet and held inclose contact or engagement therewith by a spring, 0, one end of whichis inserted in the outer surface of the spoke, from which the spring isbent back upon itself and under the spoke. The main shaft is supposed torotate in the direction of the arrow upon the face of the ratchet, andthrough said ratchet and pawl transmits motion to the fly-wheel. Now, inthe event of the sudden stoppage of the engine and shaft, which mayresult from priming in the boiler, causing a sudden stoppage of thepiston, the fly-wheel will continue notwithstanding to revolve, the pawlsliding over the beveled faces of the ratchet-teeth until the momentumis exhausted.

Having described my invention, what I claim 1s The combination, with theshaft A, having a conical head or spindle, a, and carrying aratehetwhcel, D, of the fly-wheel or pulley B, having aconically-recesscd hub and carrying the pawl d", engaging with saidratchet, the disk or washer 0, spring (1, and screw or bolt d,substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand this14th day'of November, 1887.

LUCIUS D. OOPEL AND.

Vitnesses:

J os. 13. OoNNoLLY, R. DALE SPARHAWK.

